@misc{indiciae52c7711fcf06,
  title = {Using computer graphics to map origin-destination data describing health care delivery systems.},
  author = {A M Francis and J B Schneider},
  year = {1984},
  doi = {10.1016/0277-9536(84)90057-1},
  url = {https://pubmed.ncbi.nlm.nih.gov/6547248/},
  note = {Source identifier: 6547248}
}